PNP 2014-019, Relief Request Number RR 4-19 Proposed Alternative to the Requirements of ASME Code Case N-638-4

Relief Request Number RR 4-19 Proposed Alternative to the Requirements of ASME Code Case N-638-4

ML14057A766
Person / Time
Site:	Palisades
Issue date:	02/26/2014
From:	Vitale A Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
PNP 2014-019
Download: ML14057A766 (9)

Text

AEntergy

~

Entergy Entergy Nuclear Palisades Covert, Covert, MI Tel Tel 269 Nuclear Operations, Palisades Nuclear 27780 27780 Blue Operations, Inc.

Nuclear Plant Blue Star Plant Star Memorial Inc.

Memorial Highway Ml 49043-9530 269 764 49043-9530 764 2000 2000 Highway Anthony J.

Anthony J. Vitale Vitale Site Vice Site Vice President President PNP 2014-019 PNP 2014-019 February 26, 2014 Regulatory Commission S. Nuclear Regulatory U. S.

ATTN: Document Control Desk Washington, DC 20555-0001

SUBJECT:

Relief Request Number RR 4 Proposed Alternative to the Requirements of ASME Code Case N-638-4 Requirements Palisades Nuclear Plant Docket 50-255 License No. DPR-20

Dear Sir or Madam:

Pursuant to 10 10 CFR 50.55a(a)(3)(ii), Entergy Nuclear Operations, Inc. (ENO) hereby requests NRC approval of the Request for Relief for a Proposed Alternative for the Palisades Nuclear Plant (PNP). This alternative is for the current fourth 10-year lSI ISI interval.

The request is associated with the use of an alternative to the requirements of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Code Case N-638-4, Similar "Similar and Dissimilar Metal Welding Using Ambient Temperature Machine GTAW Temper Bead Technique, Technique," dated October 5, 5,2006.

2006.

To support the startup of PNP following the current refueling outage, ENO ENO requests approval of this alternative by March 8, 8, 2014.

This letter letter contains no no new new commitments commitments and no no revised commitments.

Sincerely, ajv/jse ajv/jse

PNP 2014-019 PNP 201 4-019 Page 22 Page

Attachment:

Relief Request Relief Request Number Number RR4-19 RR4-19 Proposed Proposed Alternative cc: Ill, USNRC Administrator, Region III, USNRC Project Manager, Palisades, USNRC Resident Inspector, Resident Inspector, Palisades, Palisades, USNRC USN RC

ATTACHMENT ATTACHMENT ENTERGY NUCLEAR ENTERGY NUCLEAR OPERATIONS, OPERATIONS, INC. INC.

PALISADES NUCLEAR PALISADES NUCLEAR PLANT PLANT RELIEF REQUEST RELIEF REQUEST NUMBER NUMBER RR RR 4-19 PROPOSED ALTERNATIVE 4-19 PROPOSED ALTERNATIVE in Accordance with in with 1010 CFR 50.55a(a)(3)(ii)

CFR 50.55a(a)(3)(ii)

Hardship or Unusual Difficulty Hardship Difficulty Without Without Compensating Compensating Increase in Increase Level of in Level of Quality Quality and and Safety Safety

1. ASME Code Component(s)

Component(s) Affected Affected!I Applicable Code Edition Edition Components // Numbers: Pressurizer Safety Relief Relief Valve RV-1 RV-1 041, weld number PCS-6-PRS-1 C1-1 PCS-6-PRS-1 Cl-i Code of of Record:

Record: American Society of Mechanical Engineers Engineers (ASME)Section XI, Xl, 2001 Edition through 2003 Addenda as amended by 10 CFR 50.55a ASME Code Case N-638-4, "Similar Similar and Dissimilar Metal Welding Using Ambient Temperature Machine GTAW Temper Bead Technique,Section XI, Division 1,n 1, (Reference 2)

Description:

Dissimilar metal in the pressurizer safety relief valve nozzle Unit / Inspection Interval: Palisades Nuclear Plant (PNP)/ Fourth 10-Year Interval

2. Applicable Code Requirements Requirements Code Case N-638-4 allows for ambient temperature temper bead welding of ferritic materials without the requirement for elevated preheat or post weld heat treatment. In addition, Code Case N-638-4, paragraph 11(b), (b), requires that thethe depth of the weld shall not be greater than one-half of the ferritic base metal thickness.

thickness".

The NRC approved Code Case N-638-4 N-638-4 in Regulatory Guide (RG) 1.147, 1.147, "Inservice Inservice Inspection Code Case Acceptability Acceptability,, ASME Section XI, Division 1,n 1, (Reference 5) with the following conditions:

(1) Demonstratio Demonstration n for ultrasonic examination of the repaired volume is required using using representativ representative e samples which contain construction type flaws.

(2)

(2) The provisions provisions of 3(e)(2) or 3(e)(3) may or 3(e)(3) may only used when itit is only be used is impractical to use use the interpass interpass temperature measuremen measurementt methodsmethods described described inin 3(e)(1), such such as as in in situations situations where the weldment area is is inaccessible (e.g., internal inaccessible (e.g., internal bore bore welding) or or when when there are extenuating extenuating radiological radiological conditions.

The The RGRG 1.147 1.147 conditions conditions do do not not apply apply toto the the planned planned repair/replac ement activity repair/replacement activity at at Palisades Palisades as as discussed discussed in in Sections Sections 33 andand 44 below.

below. Condition Condition (1)

(1) does does notnot apply apply because because radiography will be radiography will be used used for the the required volumetric examination per the Construction per the Construction Code Code (Reference (Reference 7). The use 7). The use ofof radiography as as aa volumetric volumetric examination examination method method complies with with paragraph paragraph 4(a)4(a) ofof N-638-4.

N-638-4. Condition Condition (2)(2) does does notnot apply apply because because interpass interpass temperature temperature 11 of of 55

measurement will measurement will be be performed performed by direct measurement by direct measurement using using thethe provision provision ofof 3(e)(1) 3(e)(1) and and will not will not be performed using be performed the provisions using the provisions of either 3(e)(2) of either 3(e)(2) or or 3(e)(3).

3(e)(3).

3. Reason for

3. Reason Request for Request During the During the current current 11 R23 R23 refueling refueling outage, outage, Entergy Entergy NuclearNuclear Operations, Operations, Inc.Inc. (ENO)

(ENO) performed an ultrasonic performed an ultrasonic examination examination on on pressurizer pressurizer safety safety relief relief valve valve RV-1041 RV-1 041 weld weld PCS-6-PRS-1C1-1 (RV-1041).

PCS-6-PRS-1C1-1 (RV-1041). The The examination examination revealed revealed two two axial axial indications indications in in the the root root area of area of the weld. The the weld. The weld weld containing containing thethe indications indications is is aa dissimilar dissimilar metal metal weld weld (DMW)

(DMW) between the between the pressurizer pressurizer nozzle nozzle and flange for and flange for the the safety safety relief relief valve.

valve. These These twotwo indications indications diddid not not meet meet applicable applicable acceptance acceptance criteria criteria under under ASME Section Section XI, Table IWB-3410, Table IWB-3410, Acceptance Standards,"

"Acceptance Standards, and requirerequire aa repair/replacement repair/replacement activity activity to return return the weldweld to an an acceptable condition.

In In the existing design, the pressurizer safety relief valve nozzle nozzle configuration contains materials that are susceptible to primary water stress corrosion cracking (PWSCC). First, First, the safety relief valve weld neck flange was manufactured from SB-166, SB-i 66, UNS N06600 (Alloy nickel alloy while the DMW attaching the flange to the vessel nozzle was fabricated 600) nickel from Alloy 821182 82/1 82 filler metal. The nozzle was manufactured from A-508, Class 2 material, and the pressurizer upper head is A-533, Grade B Class 1. The pressurizer nozzle and upper head materials are low alloy steels which are not susceptible to PWSCC. See Figure 1.

The new DMW will be installed and examined in accordance with the 1992 Edition of ASME Section III, Subsection NB. NB. However, in lieu of the preheat and postweld heat treatment requirements of the Construction Code, ENO plans to install the Alloy 52M weld buttering across the face and full circumferenc circumference e of the weld end preparation of the A-508, Class 2 nozzle using the ambient temperature temper bead provisions of Code Case N-638-4. N-638-4.

Because Code Case N-638-4, paragraph 1(b) 1(b) limits the depth of the weld to one-half of the ferritic base metal thickness, ENO will propose an alternative to this requirement in Section 4. 4.

Hardship IfIf this repair/replac ement activity was exclusively performed repair/replacement performed in in accordance withwith the Construction Construction Code, Code, then conventional postweld postweld heat heat treatment, as as prescribed prescribed in in the the Construction Construction Code for this repair/replac ement activity, would this repair/replacement would have to to be performed in in the the field, field, andand would would result in in unnecessary unnecessary radiological exposure exposure to to maintenance maintenance personnel.

personnel.

Resistance Resistance heating heating blankets blankets would would have have to to bebe attached attached to the relief valve to the valve nozzle nozzle and and surrounding surrounding area area using using aa capacitor capacitor discharge discharge stud stud welding welding process.

process. Thermocoup Thermocouples would les would also also havehave to to be be attached attached to to the the relief valve valve nozzle nozzle usingusing aa capacitor capacitor discharge discharge welding welding process process to to monitor monitor postweld postweld heatheat treatment treatment temperatures temperatures.. Prior Prior toto heat-up, heat-up, thermal thermal insulation would also insulation would also have have toto be be installed.

installed. UponUpon completion completion of of postweld postweld heat heat treatment, treatment, the the insulation, insulation, heating heating blankets, blankets, studs, studs, and and thermocoupl thermocouples es would would have have toto be be removed removed from from the the nozzle.

nozzle. Thermocoup Thermocouples les and and stud stud welds welds would would be be removed removed by by grinding, grinding, and and ground ground removalremoval areas areas wouldwould be be subsequently subsequently examined examined by the liquid by the liquid penetrant penetrant or or magnetic magnetic particle particle method.

method.

This This process process would would result in approximatel result in approximately y 11 Rem Rem of of added added dose dose asas compared compared to to the the alternative.

altemative.

Although Although Subsections Subsections IWA-4600 IWA-4600 and and IWA-4630 IWA-4630 of of ASME ASME Section Section XI XI provide provide requirements requirements for for temper temper beadbead welding welding without without postweld postweld heat heat treatment, treatment, thesethese requirements requirements would would also also 22 of of 55

involve unnecessary involve unnecessary radiological radiological exposure exposure to site personnel to site personnel forfor the the same same reasons reasons as as aa conventional postweld conventional postweld heat treatment. These heat treatment. requirements involve These requirements involve elevated elevated preheating, preheating, monitoring of monitoring of interpass interpass temperature, temperature, and postweld hydrogen and aa postweld bakeout, which hydrogen bakeout, which are are accomplished and accomplished and controlled controlled using using the same methods described same methods described aboveabove for for aa conventional conventional postweld heat postweld heat treatment.

treatment. ThisThis process process would would alsoalso result result in in approximately approximately 11 Rem Rem of of added added dose as dose compared to as compared to the alternative.

the alternative.

Therefore, utilizing Therefore, utilizing this proposed proposed alternative to to Code Case N-638-4N-638-4 will result result inin aa significant reduction in radiological reduction radiological exposure to site personnel.

4. Proposed Alternative and Basis for Use Pursuant to 10 CFR 50.55a(a)(3)(ii), ENO proposes Pursuant proposes an alternative to the provision in paragraph 11(b) (b) of N-638-4 that limits the depth of the weld to "one-half one-half the ferritic base metal thickness. More specifically, ENO proposes to use the new alternative provision in thickness."

paragraph 11 (b)(1) of N-638-5 which states:

(1) Through-wall circumferential welds are permitted if the following restrictions are met:

(a) For repair/replacement activities associated with existing welds, the existing weld (including any associated buttering) shall be removed in its entirety.

(b) Temper bead buttering shall be applied across the entire face of the weld preparation area on the base materials requiring tempering, and shall extend around the full circumference of the joint.

Proposed Alternative ENO will replace this existing nozzle/flange assembly with a modified design. The modification will replace the existing S8-166, SB-166, Alloy 600 weld neck flange with an SA-182 F316 austenitic stainless steelfiange, steel flange, which is not susceptible to PWSCC. The Alloy 82/1 821182 82 weld material will be removed and the nozzle cut back slightly to assure that all of the original weld metal is removed. The new DMW between the stainless steel weld neck flange and low alloy steel nozzle will be made with ERNiCrFe-7A (Alloy 52M) weld metal. The weld neck flange will be slightly longer neck longer to make up for the removal of the the original weld metal, metal, but the overall length length from the vessel to to the safety valve boltedbolted flanged joint joint will remain the same. The change is essentially like-for-like in its geometry, with only the materials being changed. The new materials are not not susceptible to PWSCC. See Figure 2 for additional details.

The The welding operation for the DMW, as as shown shown in in Figure Figure 2, 2, includes includes the following basic basic steps:

1. Install Alloy 52M weld buttering across the

1. Install the entire entire face and circumference of the weld end end preparation preparation of of the A-508, Class the A-508, Class 22 nozzle.

nozzle.

2.

2. Install Install ER3O8L buffer layer ER308L buffer layer and and Alloy Alloy 52M 52M buttering buttering across across thethe entire entire face and and circumference circumference of of the weld end the weld end preparation preparation of of the the SA-1 SA-182,82, F31 F316 6 stainless stainless steel steel flange.

flange.

3.

3. Complete Complete the the Alloy Alloy 52M 52M groove groove weld.

weld.

33 of of 55

Basis for Basis Use for Use Code Case Code Case N-638-4 N-638-4 andand 55 specify requirements for specify requirements for performing performing ambient ambient temperature temperature temper temper bead bead welding using using the machine gas the machine Tungsten Arc Welding gas Tungsten (GTAW) process.

Welding (GTAW) process. Research Research by by the Electric Power Research Electric Power Research Institute Institute (EPRI)

(EPRI) and otherother organizations organizations on the use use of of anan ambient temperature temper temper bead welding operation bead welding operation using machine GTAW using the machine GTAW process process is is documented in documented in EPRI EPRI Report Report GC-111 GC-1 11050, Ambient Temperature 050, "Ambient Temperature Preheat Preheat for for Machine Machine GTAW Temper Bead Bead Applications."

Applications. According to the EPRI EPRI report, repair welds welds performed with an ambient temperature temper bead bead procedure procedure utilizing the machine machine GTAWGTAW welding process exhibit mechanical properties equivalent equivalent or better better than those of the surrounding material. Laboratory testing, analysis, base material. analysis, successful procedure procedure qualifications, and successful repairs have all demonstrated the effectiveness of this process. EPRI Report GC-1 11050, Section 6.0 concluded the following:

GC-111050, Repair of RPV components utilizing machine GTAW temper bead welding at ambient "Repair temperature produces mechanical properties that are commonly superior to those of the service-exposed substrate. The risk of hydrogen delayed cracking is minimal using the GTAW process. Cold stress cracking is resisted by the excellent toughness and ductility developed in the weld HAZ (heat affected zone). Process design and geometry largely control restraint considerations, and these factors are demonstrated qualification.

during weld procedure qualification."

ENO plans to deposit the Alloy 52M butter layers to the weld end preparation of the low alloy steel A-508, Class 2 nozzle using Code Case N-638-4. However, paragraph 1 (b) of 1(b)

N-638-4 limits the depth of the weld to one-half one-halt the ferritic base material thickness. The incorporation of this weld depth limitation is likely the result of concerns related to the high restraint that a repaired weld would experience if a localized or partial-depth weld repair was performed. As stresses build under a high degree of restraint, cracking may occur at detect defect locations. It should be noted that paragraph 11(b) (b) of N-638-5 also limits the depth of weld repairs to one-half the thickness of the ferritic base material. While paragraph paragraph 1 (b)(1) does 1(b)(1) allow through-wall circumferential welds to be made, the following two requirements must be met:

a) The existing weld (including any associated buttering) shall be removed in in its entirety.

entirety.

b) Temper Temper beadbead buttering shall be applied across across the entire face of the weld preparation area on the base materials requiring tempering, and and shall extend around around the full circumference of the joint. joint.

The The restrictions in in paragraphs 11(b)(1)

(b)(1) of N-638-5 N-638-5 preclude preclude the the high high restraint associated with localized localized and and partial-depth partial-depth weld repairs. Regarding Regarding the PNP PNP pressurizer pressurizer nozzle nozzle DMW, DMW, only only the the weld butter will be deposited will be with the ambient deposited with ambient temperature temper bead bead rules of of N-638-4.

N-638-4. UponUpon completion completion of all all welding, welding, the the DMW DMW willwill be be nondestructively nondestructively examined examined in in accordance with paragraph 4(a) of accordance with paragraph 4(a) of Code Case Code Case N-638-4.

N-638-4. These These nondestructive nondestructive examinations examinations-willwill be be performed performed at at least least 48 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> hours after after completing completing thethe third third temper temper beadbead layer and will layer and will include include liquid liquid penetrant penetrant andand radiographic radiographic examinations.

One other point One other should be point should be considered.

considered. The The provisions provisions of of Code Code Case Case N-638, N-638, andand its its revisions, revisions, ensure that the ensure that the impact impact properties properties of of the the ferritic ferritic heat heat affected affected zone zone (HAZ)

(HAZ) areare not not adversely affected when adversely affected when using using the the ambient ambient temperature temperature termper termper bead bead welding welding process.

process.

44 of of 55

That said, That utilization of said, utilization of paragraph paragraph 11 (b)(1)

(b)(1) of of Code Code Case Case N-638-5 N-638-5 has has no no effect effect on on the the impact impact properties established properties established during during welding welding procedure procedure qualification qualification or or create create any any adverse adverse metallurgical conditions metallurgical conditions in in the the feriitic ferlitic HAZ.

HAZ. Rather, Rather, as as noted noted above, utilization of above, utilization of machine machine GTAW temper GTAW temper beadbead welding welding at at ambient ambient temperature temperature produces produces mechanical mechanical properties properties that that are commonly are commonly superior to those of service-exposed substrate.

of the service-exposed substrate.

The proposed The proposed alternative of of this this request request provides provides an acceptable level level of quality quality and safety.

butter on the low The weld butter low alloy steel pressurizer pressurizer safety valve nozzlenozzle will be be installed installed using using Alloy 52M filler metal using using aa qualified ambient temperature temperature temper bead bead welding procedure.

procedure.

The safety valve flange will be replaced with SA-182 The SA-1 82 F316 F31 6 austenitic stainless steel steel and will be be welded to the nozzle using Alloy 52M. 52M and Alloy 52M SA-1 82 F316 and SA-182 F31 6 are not susceptible PWSCC. Except as proposed to PWSCC. proposed regarding regarding paragraph paragraph 11 (b)(1)

(b)(1) of N-638-5, ENOENO will comply with all other provisions of Code Case N-638-4 during the repair/replacement repair/replacement activity.

Therefore, ENO requests that the NRC staff authorize the proposed alternative in accordance with 10 CFR 50.55a(a)(3)(ii).

5. Duration of Proposed Alternative The proposed alternative applies to the remainder of the fourth lSI ISI interval for PNP, scheduled to end on December 12, 2015.

6. References

1. ASME Code,Section XI, 2001 Edition through 2003 Addenda.

1.

2. ASME Section Xl, XI, Code Case N-638-4, Similar "Similar and Dissimilar Metal Welding Using Ambient Temperature Machine GTAW Temper Bead Technique, Technique," October 5, 5,2006.

2006.

4. ASME Section Xl, XI, Code Case N-638-5, Similar "Similar and Dissimilar Metal Metal Welding Using Ambient Temperature Machine GTAW Temper Bead Technique, Technique," April 27, 2009.

5. Regulatory Guide 1.147, 1.147, lnservice "Inservice Inspection Code Case Acceptability, ASME Section XI, XI, Division Division 1,1," Revision 16, 16, October2010.

October 2010.

6.

6. ASME Section III, 1965 Edition, with Addenda 1965 Edition, Addenda through Winter 1966 1966

7. ASME Section Section III, III, Subsection Subsection NB, NB, 1992 1992 Edition/No Edition/No Addenda 8.

8. EPRI EPRI Report Report GC-1 11050, Ambient GC-111050, "Ambient Temperature Preheat for for Machine Machine GTAW GTAW Temper Bead Applications Bead Applications" 7.

7. Enclosure Enclosure Figure Figure 11 - Pressurizer Pressurizer Safety Valve Nozzle Safety Valve Nozzle Details Details Figure Figure 22 - Safety

- Valve Nozzle Safety Valve Nozzle Flange Flange Repair/Replacement Repair/Replacement 55 of of 55

ENCLOSURE ENCLOSURE Figure 11 Figure Pressurizer Safety Pressurizer Safety Valve Valve Nozzle Nozzle Existing Existing Design Design Weld Material:

Flange Material:

Flange Material; Alloy 82/182 SB-I 66 Alloy 600 S8-166 Weld Detail "En "i 0 I.}..

ItII

\ .

II' t;,;t .

• to Weld Detail "E" Clad Material:

ft"-t-----i A-304

[ . ": I EE1 Nozzle Material:

A-508 64 Class 2 PCS-6-PRS-1 C1-1 "Nozzle to Flange Joint Weld"

ENCLOSURE ENCLOSURE Figure Figure 2 2 Safety Safety Valve Valve Nozzle Nozzle FlangeFlange Repair/Replacement Repair/Replacement PART LIST PART liST 1 MATERIAL MATERIAL NOTES NOTES SAFETY RIUEF

l.  :)A';J:*MI~II:/" A5O&-64 CLASS A*508-64 CLASS 22 1.

1. REFERBICE REFERENCE DlMEH5IONS DIMENSIONS FROM FRON PALISADES PALISADES DRAWING DRAWINCI M1-l.A lIt-LASHEET SHEET 986.

USA 2.

2. CLADDING CLADDING STAINLESS STEEL STAINLESS STEEL 304 304 2.

2. APPLICABLEA5II!

APPUCABlI! CODE FOR ASME 0(1)£ FOR RI!PAlR/RS'lACSiIENT REPAIR/REPLACEMENTIS IS 2001 2001 EDmON EDITiON OF OF A5ME ASlIlE CODE COOS 2.

3. BUTTER SUTTER ALLOY ALLOY 52M 52M SECnOH SECTION XI, XI, WITH WITH ADDENDA ADDENDA THROIICIH THROUCH 2003.2003.

4

4. WELD WELD ALLOY ALLOY 52M 52M ~ L.OCATE LOCATE FUSION FUSION LINELINE lli1WEEII BETWEEN NOZZLE NOZZLEAND NOZZLE BIIlTER.

AND NOUIJi BUTTER. fiRST FIRST arr CUT SHALL SHALL BEBE MADE MADE TONGUE SMALL TONGUE SMALL V AT AT CENTIR CENTER OF OF WELD WELD TO TO ENSURE ENSURE THAT THAT EXCESS EXCESS ORIGIIIAL ORIGINAL NOZ2l.E NOZZLE MATEIIIAL MATERIAL IS IS NOT NOT REMOVCD.

REMOVED.

5

5. GROOVE AND GROOVE SA-182F316 SA*I 82F316 COMPLETLY COrUPLErLy REMOVE REMOVE ORIGINAL ORIGINAL WELDWELO MATERiAl MATERIAL ANDAND 8UTTER BUTTER PLUS PLUS Uri" A$ OF BAS£ OF BASE MEl'AL METAL ONON FLANGE THE THE NOZZLE NOZZLE SIDE.SIDE, FLANGE BUFFER lLAYER 4.

4. MAalIIIED SURFACES AND MACHINED SlJRFAaS SURFACES TO AND SURFACES TO BE SHELL BE WELDED SHALL RE W!l.IlED GE VISUALLY VISUALLY EXAMIIIED EXAMINED AND j

6. SUFFER AYER 308L STAINLESS STEB.

30& STAINlESS STEEl, UQUiO LIQUID PEHETRANf PENETRANT EXAMINED EXAMINED PRlDRRMGR TOTO WELDING WELDING IN ACCORDANCE WITH INACCORDANCE WiTH ASME AISlE CODE, CODA AND SECflON III.

SEcnON III, SUIlSECl10H SUBSECTION Ns.63152 NR-35.*

22 (NOM)

.22" (NOM)

\j___.1o (NoM)L> ~ S BU11l!R BUTTER SHAI.lSE SHALL BE APPUED APPliED USING USING AM8IDIT TEMI'!RI.lUR! lSIIPI!R8EAD AMBIENTTEMPERTXURE TECltNlQUE TEMPERBEAPTECHNIQUE mu:

STEP 1; REMOVAL REMOVAL OF OF ALL ALLOY 82/182 ALL ALLOY 82/182 ~ h V COOS CASe PER COO! CPSE N-63&4 N-5384 TO ACHlM ACHIEVE SUFflCfI!NT SUFFICIENT THICKNESS THICKNESS TO 10 AIJ.I:IN ALLOW PROPER PROPER WELD WELD FIT UP UP AFTER WELD PREPARAnON PREPARAflGN IS MACNINED PINAL IS MAaIINED. FINAL NOZZI.E NOZZLE BUT1'ER BUTTER THICKNESS THICKNESS SHAll.

FROM THE FROM THE NOZZlE.

NOZZLE. V'" IE BE GREATER THAN THEN 1/11".

UJS.

SHALL

6. BUFFER SUFFER{ITEM(ITEM B) 61 MATERIALSHAlL MATERLALINALL BE ASME CODE, CODE. SECTlON SECTION u. SFA-59, ER3OBL.

II SfA.5.9. ERSOEL CERTIFIED CERTIFIED TO TO (MOM) SECTION nt.

S£CTION III. NB Of 0 THE COD£.

CODE, fi:-.,.

7. DIMENSION DIMENSION APPUES APPLIES AFTER MACfllNlNG MACHINING AND/OR AND/OR GRINDING GRINDING WELD WELD TOTO SUITABLE SUITABLE V CONDmON FOR NDE.

CONDITION ROE.

~: WELD PREPARATION PREPARATION OF NOZZlE NOZZLE BUTTER ra:-... WELD YaD PREPARA110N PREPARATiON AND RNAL MACHINED DETAlI.S, FiNAL MACMIIIED DETAILS. AS AS API'I..ICA8I.E.

APPLICABLE, SHALL SHALL BE BE PROYIDED PRDVIDEI)

V BY IIISTALLER.

S'( DIMENSION SHALL INSTALLER. DIMENSION SHALL BEBE IIIEASURIID MEASUHED AND AND RECORDED.

RECORDED.

-_-- .75 (NON) f9:-... FINAL ANAL IIUT1' BUTT WELD weLD SHALL BE BE RADIODRAPHED RADIDGRAPHED AND UQUID FTIIETRENT AND LIQUID PENE'lRANT EXAMINED

£XAMINIiD iNIN V ACCORDANCE ACCORDANCE WITH NB-522S. N8-li222.lf REQUIRED A IF REQUIRED A PSI PSI UI.TRUAOIIlIC ULTRASONIC EXAMINATiON EXl\MlNAnDN SHALL SHALL AlSO BE PERFORMED 41.50 PERFORMED PER 1I&61U(b1 FOR COMPLIANCE SilIUiI FOR COIIPUANC& WITH WITH THE THE OESIIJN SPECIfICATION.

DESIGN SPECIRCATION.

10 (NOM) 10. FILLER

10. fiLLER METAL r.m'AL (ITEM OTEM 3) f()R THE

3) FOR THE NOZZLE NOZZlE ANDAND AANGE FlANGE GUTTER 8IJITeR AND AND FILLER FIUER METAL METAL FORFOR THE TIlE 8UTfWELD (lIEN BUTIWBU) (ITEM 4)

4) SHALL SHI.'>.'>.'>.'>.'>.'>.'>.'>.'>. '>.1fS'i'-37.S* (NON)

(NOM) ~

U.

15. fiNAL SURFACE FINAL SHALLBE SHALL SURFACE FINISH BE GROUND fINISH OF GROUND FLUSHFWSH WITH weLDS SHALL Of WELDS SHAll BE BE 250 WlTHTHESURROUIfDlNG!IASf

!'IN FUME 250 HIN RIllS OR THE SURROUNDING BASS MATERIAL OR SMOOTHER.

SMOOTHER. THE MATEIIIAL.

YaD CROWN THE WELD CROWlII IEE2:

mf.Z: WELD WELD OF OF BUTTER BUTTER STEP STEP 4: WELD PREPARAT 4: WELD PREPARATION LON OFOF FLANGE FLANGE BUTTER BUTTER

.22" (NOM) ct>6.00" (REF.) I ¢3.00* +.g:g; (REF.)

(1)6.00" (REF.)

FINAL CONFLGILR FINAL ATlON WELD CONFIGIIRATION: WELD FLANGE FLANGE